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Organisms and Populations — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations2 Marks
Question
Most living organisms cannot survive at temperature above 45ºC. How are some microbes able to live in habitats with temperatures exceeding 100ºC?
✓

Answer

Micro-organisms of hot. Springs and vents (mouth of sea bed volcanoes) are able to survive at the high temperature due to
  1. Occurrence of branched chain lipids in their cell membrane that reduce fluidity of cell membranes.
  2. Having minimum amount of free water in their bodies. Removal of water provides resistance to high temperature.

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